Display Control for Mixed HDR SDR Image Lists

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Displaying a list of images with different dynamic ranges, such as High Dynamic Range (HDR) and Standard Dynamic Range (SDR), can reduce viewability due to significant differences in brightness, especially when mixed in a display capable of HDR.

Innovation Solution

A display control apparatus and method that determines the dynamic range of each image and uniformly displays thumbnails using SDR, while selecting images use their respective dynamic ranges, ensuring all thumbnails are displayed in SDR for improved list viewability and images are shown in their original dynamic range for appreciation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If images with different dynamic ranges (HDR and SDR) are displayed uniformly in their original formats, then each image maintains its original quality, but the overall viewability of the image list is reduced due to significant brightness differences

Engineering Contradiction:
Improvebrightness uniformityVSAvoidimage quality fidelity
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by treating HDR and SDR images differently based on their dynamic range characteristics. When an HDR image is selected, the system switches the entire display to HDR mode to maintain image quality fidelity. When an SDR image is selected, the system switches to SDR mode. This dynamic adaptation ensures that each image is displayed in its optimal format while maintaining overall brightness uniformity across the user experience.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts the display mode between HDR and SDR based on the selected image's dynamic range characteristics. The display control apparatus detects whether the selected image is HDR or SDR and automatically switches the display mode accordingly, creating a dynamic adaptation that resolves the contradiction between brightness uniformity and image quality fidelity.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If the display mode switches between HDR and SDR based on selected image, then image quality is maintained, but the complexity of display control increases

Engineering Contradiction:
Improveimage quality fidelityVSAvoiddisplay control complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The display control apparatus automatically detects the dynamic range characteristics of the selected image and switches the display mode without requiring manual user intervention. The system serves itself by autonomously determining whether to operate in HDR or SDR mode based on the image properties, thereby maintaining image quality while minimizing the perceived complexity for the user.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements feedback by continuously monitoring which image is selected and automatically adjusting the display mode based on the selected image's dynamic range characteristics. This closed-loop control ensures that the display mode always matches the selected image requirements, maintaining image quality fidelity while managing control complexity through automation.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11330120B2Display control apparatus, control method for display control apparatus, and non-transitory computer-readable medium
Publication Date: 2022.05.10 CANON KK
  • US11330120B2 patent drawing
  • US11330120B2 patent drawing
  • US11330120B2 patent drawing

AI summary

A display control apparatus includes: a determination unit configured to determine whether each of a plurality of images is an image having a high dynamic range (HDR) or an image having a standard dynamic range (SDR); and a control unit configured to display a list of the plurality of images in a display unit and display an image selected from the list of the plurality of images in the display unit, wherein the control unit is further configured: to display a selected image in the plurality of images using the HDR, in a case where the image having the HDR is selected, and to display the plurality of images in the list uniformly using the HDR or the SDR, in a case where the plurality of images in the list includes both the image having the HDR and the image having the SDR.